The LECO AC600 semi-automatic isoperibol calorimeter is designed for accurate determination of calorific content in solid and liquid fuels. Combining semi-automated operation with LECO’s thermodynamic TruSpeed™ technology, the AC600 delivers rapid analysis times and high throughput without compromising accuracy or precision.
A newly designed, lightweight, ergonomically optimized combustion vessel simplifies handling and significantly reduces operator strain. Together with intelligent software control and robust calorimeter design, the AC600 sets a benchmark for modern calorimetry laboratories focused on productivity, repeatability, and long-term reliability.
LECO AC600
Key Features
- Enhanced automation for increased laboratory productivity
- Rapid analysis with results available in as little as 5 minutes
- TruSpeed™ thermodynamic model enables fast measurements without loss of accuracy
- Ergonomically designed, lightweight combustion vessel improves handling and heat transfer
- Integrated vessel charging station simplifies oxygen filling
- Quick-release depressurization ports speed up vessel handling between runs
- Intuitive software with virtually unlimited data storage capacity
- Simplified data management and compatibility with a wide range of LIMS platforms
Theory of Operation
The LECO AC600 semi-automatic calorimeter determines the calorific value of organic materials such as coal, coke, and fuel oils by precisely measuring the heat released during combustion in a controlled environment.
A prepared sample is placed into a combustion vessel, which is then pressurized with oxygen. The vessel is automatically lowered into a water-filled bucket inside the instrument. The bucket is sealed using an inflatable bladder, while the surrounding jacket is also filled with water and maintained at a constant, controlled temperature characteristic of an isoperibol calorimeter system.
Following ignition of the sample, the temperature of both the bucket and jacket water is continuously measured using a high-resolution electrical thermometer with a resolution of 0.0001 °C. Temperature data are collected every second throughout the analysis.
The software allows correction of results for factors such as ignition wire contribution, nitrogen, sulfur, moisture, and ash content when required. Two data evaluation modes are available:
- Delta T Mode, where the calorific value is calculated from the maximum temperature rise of the bucket
- TruSpeed™ Mode, a thermodynamic model developed by LECO that accounts for heat capacities of system components and energy transfer within the calorimeter
The TruSpeed™ mode enables the AC600 to achieve rapid, 5-minute analysis cycles while maintaining excellent accuracy and precision.
Models
- AC600 – with standard combustion vessel
- AC600 – with halogen-resistant combustion vessel
- Dual AC600 – with standard combustion vessels
- Dual AC600 – with halogen-resistant combustion vessels
